Nor150 Sound Intensity Option Sound intensity probe Nor1290

Transcription

1 Product Data Nor150 Sound Intensity Option Sound intensity probe Nor1290 Sound Power measurements in accordance with - ISO ANSI S ECMA 160 Noise Mapping Noise Source locations Innovative sound instrumentation

2 The Nor150 equipped with the sound intensity option and the Nor1290 probe kit is a powerful tool for all types of sound intensity measurements. Every effort has been made to make a robust and user-friendly solution capable of handling all kinds of measurement situations, from high-precision laboratory conditions to demanding and rough fi eld use. Current segment Warning for current segment Features Compliant to IEC Class 1 Full on-board support for ISO Unique phase correction allows measuring 25 Hz to 10 khz with 12 mm spacer Intuitive warning indicators Measurement-based suggestions for improving results Automatic measurement sequence Pause and back-erase with graphical display Full measurement edit support (segment exclusion, resize, retake) Add segment support Export to Nor850 mapping and reporting software Photo, text and voice annotation NorRemote app for smartphone remote control Support for ½ and ¼ microphones Current surface Warning for cursor position Negative values in opposite direction Sound pressure level Warnings for each band Sound intensity with direction Toggle between intensity and power To open the Warning panel Band might need attention Toggle numerical representation Change between scope, simple and advanced view 2

3 Intuitive user-interface With simplicity in mind, the Nor150 user interface is designed for easy and intuitive operation. The user is presented with only the key information needed to decide whether a measurement is successful or not. Full-text warnings and improvement suggestions provides the necessary detail without confusion. If full, in-depth graphical or tabular representation of fi eld indicators or difference functions is desired, the advanced view is readily available to the user. Presentations include analysis of extraneous noise, repeatability, uncertainty values and dynamic capability. Overload indicator Measurement storage state Current time or elapsed measurement time Battery status Help system Sound power calculation based on segment area Indicates that A-weighing is applied to the displayed spectrum Attention: Higher FpI than recommended by ISO Measurement not complient: Two optional scans had to large difference Warning window activated by the INFO button. Standard compromised Attention required Excluded band The warning codes available in Intensity mode 3

4 Advanced View Dynamic capability analysis shows the dynamic capability of the probe and instrument, along with the field indicator FpI from the current measurement The -view shows the difference between two orthogonal scans The Extranous Intensity view shows the F+/- indicator for the total surface Scope View Full overview of surface values and warnings, along with the total values Several segments in a surface. Warnings indicate problems, borders indicate if the segment is completly measured or excluded 4

5 Profi le time sets the resolution of the time-analysis graph Desired fi lter range. A-weightet spectrum is calculated from the range defi ned in Calculated total range Choose which standard to base measurement method and calculations on Select desired Segment scanning procedure. May be changed during a project Select desired Accuracy. May be changed during a project The total range is the frequency range of which the networks are calculated from. May be changed during a project A menu for excluding bands if needed. May be changed during a project 5

6 A smart probe The Nor1290 probe kit offers a lightweight and rugged solution in demanding environments. The probe is equipped with a smartphone, providing single hand operation and the same measurement displays as on the Nor150. The system is fully synced, allowing the user to exploit several probe confi gurations in the same measurement situation. Specifications Sound Intensity Probe Nor1290 Frequency range (±2 db) Ref. IEC Class 1 Dynamic range lower limit (microphone thermal noise) db(a) 27 Dynamic range upper limit db 146 Nominal 250 Hz (±2 db) Microphone type Preamplifi er mv/pa 12.5 ½ Rear vented, Prepolarised ¼, IEPE powered Temperature range, operation C / F 5 to 40 / 41 to 104 Temperature coeffi cient db/ C Hz db/ F / Humidity range non condensing % RH Humidity coeffi Hz db/% RH Infl uence of axial vibration db re m/s² µpa 66 Spacers included mm 12, 25, 50, 100 Cable length m / feet 3 / 10 Connector type 7pin Lemo CE/RoHS compliant/ WEEE registered Yes/Yes/Yes The Nor150/Nor1290 kit 6

7 Performance Using our unique phase correction system, the Nor150 Sound Intensity Option is capable of measuring intensity with extremely high dynamic capability. The Nor1290 probe confi g- ured with the default 12 mm spacer will typically have better dynamic capability than required by the IEC for a 100 mm spacer. This is achieved using an advanced two-stage phase calibration system and the accompanying Nor1294 Phase Calibration Coupler. The fi rst stage in the correction process includes a phase correcting fi lter for each channel, directly targeting the error introduced by the ventilation on intensity probes. The Nor1294 enables calibration at very low frequencies, thus obtaining a high precision correction. The second stage involves a per-band calibration. Using a deterministic log-swept sine, the complete process time is dramatically reduced compared to pink-noise excitation. To prove compliance to the standard and persistent performance, all calibration data is stored in the Nor150, and may easily be presented at a later time. Nor1294 Phase Calibration Coupler The two-stage calibration process with additional verification saves considerable time compared to traditional methods Calibration history for each probe Dynamic Capability [db] Typical performance: Nor150 with Nor mm IEC Class 1 instrument 100 mm IEC Class 1 instrument 12 mm k 1.6k 2.5k 4k 6.3k 10k The Nor150/Nor1290 kit provides a dynamic capability never seen before 7

8 Flexibility The Nor150 supports advanced measurement surface editing. Segments may be excluded, resized or even substituted, both before a project is complete, and after. Reconfiguring the grade of accuracy is easy. This may be done either before, during or after the measurement process. Including and excluding frequency bands is just as easy. All segments are recalculated immediately. An important feature is the ability to pause the measurement during a scan if unwanted noise occurs. Using the dedicated Pause/Continue button, a time display shows a time graph and allows a chosen number of seconds to be removed from the measurement before proceeding with the scan. Full overview Although the Nor150 shows all measurement data as clearly and neat, the user may later want to analyse the measurement and generate reports on a computer. The Nor850 sound intensity software tool is designed for this purpose. The Pause display allows a chosen number of seconds to be removed from the measurement All the familiar views from the Nor150 is available in the Nor850. In addition, advanced 2D- and 3D-renderings of the measurement surface is available, which gives the user unique insight about the sound field. Advanced measurement analysis in the Nor850 software tool. Distributor: info@norsonic.com PD 1290 Ed2Rv1En 1016